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USD 429
Part #: BP42135

Banks Power 42135 Ram-Air Intake System

2004.5-2005 GM 6.6L Duramax LLY
Part #: BP42135
★★★★★ ★★★★★ 3 Reviews
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The Banks Power 42135 Ram-Air Intake System for your 04.5-05 GM 6.6L Duramax LLY delivers astonishing best gains in airflow, air density and power. Its large cotton gauze air filter requires fewer cleanings than competitive filters (stock's small paper filter is not reusable). With its giant 7-1/8 outlet, streamlined components and enclosed cold-air box that keeps hot engine air out of the intake, the Ram-Air flows up to 57% better than stock and up to 23% better than others for greater power (up to +39 hp and +69 lb-ft more than a tuner alone), improved mileage and less black smoke. (An indicator of unburned fuel, black smoke is power you can see but not use!)

And Banks' unique 4-1/2" bellows accommodates engine movement, which prevents component damage and prolongs service life. Designed to not cause fault or error codes; lifetime warranty on filter element.

5-Year Ltd. Warranty

Banks Optional Super-Scoop

Banks exclusive Super-Scoop is an add-on product to the Ram-Air Intake System. Super-Scoop connects below the front bumper, forcing a big charge of cool, pressurized ram air into the Ram-Air Intake's air filter housing. Because the air is drawn from outside the engine compartment, it has greater density and makes more power than warmer engine air. Rainwater and debris are funneled out of the bottom. Sold separately (see below).


  • MFG. Number 42135
  • Manufacturer Name Banks Power
  • Shipping Weight 24.00 lb.
  • Shipping Length 19 in.
  • Shipping Width 11 in.
  • Shipping Height 22 in.
  • Fuel Type Diesel
  • EO Number D-161-102
  • Filter Media Oiled
  • Filter Type Washable & Reusable
  • Intake Style Enclosed Air Box
  • UPC 801279421356
  • Warranty Yes
  • Warranty Info 5 Year Limited
  • Prop 65 WARNING: Cancer & Reproductive Harm -


★★★★★ ★★★★★
5.0/5 Stars out of 3 Reviews
buy a banks
(Unknown) | February 27th, 2008
i was super glad with this intake i have had just about every one and this one buy far is the best great sound and and really helped my truck i got the super scoop with it i really like it i was scared it would not fit with my tires i have 285/75r/16 on my 04 chevy duramax rubs just a little in a tite turn if i get a Leveling Kit it will fit perfect
Great Power
(California) | June 6th, 2010
I purchased this along with Banks Monster Exhaust. Great power increase and better fuel economy. Overall I am very pleased with the system.
light hauler
(essex county nj) | November 16th, 2010
Just finished my test drive. I love it! Intallation was very easy. Everything fit perfect. Big difference in power when you stand on it.High price but seems like a quality kit. Ram air scoop all the way!

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Questions and Answers

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Most Popular Questions

Is this kit legal for use in California?
View Staff Answer 
Yes it is. Emissions compliant: CARB E.O. D-161-81
Is the piping on the intake metal or plastic?
View Staff Answer 
The construction of the BANKS POWER 42135 RAM-AIR INTAKE SYSTEM is plastic.